Simple question (I hope?).  How does one extract the data from a trellis
object? I need to get the data from a call to histogram().

A simple example below...

dat<-data.frame(year=as.factor(round(runif(500, 1990, 2010))), x=rnorm(500,
75, 35),
          y=rep(seq(1,50,by=1), times=10))
histogram(data=dat, y~x | year, type='count')

How do I get the actual numbers plotted in the histograms from this call to
histogram()?

Thanks,

Tim

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